Audio listening system



FIG. 1 is a perspective view of an audio listening system showing our new design;

FIG. 2 is a back view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is an opposing side view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines showing the environment in the Figures are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an audio listening system, as shown and described. 